Orthodontic implement



July 27 71926."

E. ANGLE ET AL.

ORTHODONTIC IMPLEMENT *o Filed March 11, 1922' Patented July 27 92 1VUNITED 'nnwnn'nn. N LE-AND srmronn'n. TKINSON, on'rasnnniva;CALlIFQRNIhl on mltonon'rro internment;

:QFFwE-f Original a iplicatidn fiiediaarch 11', assinet.54,s-71 ;,1 atNo; gaiasjeaafMartha, 1925? 1 Divided and this applicationfiled rebruar'zs, 1925. Serial 110, 11,429;

Our invention relates particularly to that class of orthodonticimplements that are shown and described in our applic'a-tionior UnitedStates LettersPatent, Serial Number 542,871, ofwhich this is a'division, and

thatare adapted to efiectthe; adjustment of an arch-bar with respect toI its termina-l anchorages, and is especially designed for use inconnection tviththe'form 'ofarch-bar and its cooperativeterminalanchorages as disclosed in Letters "Patent; ot'the United States hi e'ifi 8fi g anted to us November 29-51921.

:7 I I e p fi pi jBGts of ourinvention; are

to provide an adjusting implement of such simplified construction; thatit may he read ily applied to effect. the adjustment of the arch-bar,and aotuated with. such delicacy by. the mere contraction ofthe musclesof thehanfl of h operator, as t ord. min m m discomforture to thepatient, yet with such power and, uniformity. of action as to attain"the desired stressinj a positivemanner upon may eattache'd to said:arch-bar for thepurpose of correction of position. I Our inventioncomprehends an 'mplement having relatively movable members that maybelconveniently thrust into themouth of the.

patient, anclrespectively engage theanchor Gas an'abutment, and the archbar. so, that when caused to relatively approach, they effect theadjustment of said archbarflwith.

' termediate fof-itsl ends. w Other objeotsof our tion when saidimplement is Withdrawn therefrom. g V

Specifically stated, the form of our invention as'h'ereinafterdescribed, comprises an implement havingrelatively movable memberspivoted together, one forming an abut;

thesheathfofthe. anchor, and beingbifurcated to permit the arclhbartopass therethrough,- and having a transversegroove arranged to "guidethe retaining tang ofsa-id arch-bar and to "deflect itfinto its jlockingposition, While the other member is provided witha PIOJGCiZlIlg fingeror prong forming a hook or claw arranged to engagethe rear of the tangon the arch-bar, so that when sa d pivoted. members are actuated tocause the prong and abutment to approach-each l eretei i s. a Will be cle Ov r, by the guide compris ng the transverse groove,againsttheendotthe'anchor sheath v I g g p A I v ;In the.accompanying;dr aWings, Figure 1 the malposed teeth of. the dental arch, Whichis aplan View oi} a: humandentalfarchi showingthe type of orthodonticregulat ngi deu1ce 1nclud1 ng an arch-bar and lts anchor ages,for-whichour orthodontic}implement is particularly 7 designed to. adjustFig.1,2

is a plan view, showinganorthodontic implement constructed in accordancewith our nventlon as a-p'plled to the arch-bar and its anchon-and in"positionv to efi'ect' the adjust= view; of theimplementgshotvn in :2;

.Eig, dis anenlarged fragmentarylongitudi- .nat sectional View; takencentrally through the left-hand beak of the implement'comprising.theiplier sjshotvn in :Fig. 2;Fig. 5 .is" a fragmentaryelevationalfview,showing the inner faceiof the beak shown in Fig. 4;

Fig. 6 is; an enlarged fragmentary elevationalview of-the inner faceofthe right hand beakof theimplement shown in Fig,

beaks. distendedito engage-the end oI the arch-bar. exterior ,to the vsheath. l

The tooth regulating appliance towvhich this-invention is particularlyapplicable is indicated in a general Way in Fig. land inother,the-aroh-bar Will be f'adjusted. longi j 'tudinallywith r'elationjtothe, anchor sheath, I

nent; of the same; Fig. is; a perspeotive 2; and Fig. 7 isa plan-viewsimilar to. Fig.:

.Qybut showing airagment of thelopposed a5 a are attached to selectedanterior teeth a of the dental arch, and its terminals engaged with theanchor-bands 5 which are secured to selected posterior or molar teeth 6.

The anchor-bands 5, as shown in Fig. 1, are of a well knownconstructionyhaving the eye 7 at one end, and the threaded stem 8' atthe other endextended through said eye 7 and adjustedtherein-to clamptheband to the tooth by means of the adjusting nut 9 threaded on saidsteniiEach 61 said anchor-bands is provlded with a tubular sheath 10, thehollow or bore" 12 of which is preferably shaped to confo'rin' to andreceive the terminal of the arch-bar suitably fitted therein forlongitudinal adjustment; j

The sheath 10, asbest shown in Fig. 2, is provided with the slot 13,opening into the bore 12, and providing a keyway tor the key or splineforminga tang 15, which is formed integrally with the arch-bar 1, beingrigidly attached thereto toward the end of said arch-bar, and havingthat portion extended toward the medial region of the arch-bar, free tobe deflected relatively thereto and bent, curled or otherwise distorte'd', to afford a retaining lock for maintaining the arch-bar in theposition to which it may be adjusted.

As shown in Figs. 1 and 2, the spline forming the tang 15 on thearch-bar 1, terminates atvits connected end, short of the end of saidarch-bar, and thus-affords a a'shoulder 16, which may be convenientlyengaged to eiiect the longitudinal adjustment of said arch-bar 1' withrespect to the anchor sheath 10.

The implement shown in Figs. 2 and 3 is especially designed toaccomplish such adjustment' of the arch-bar in its sheath, and toautomatically effect the actuation of the tang, and comprises the pliershaving the pivoted handles 21 and 22' which when caused'to approach,effect the consequent approachof their respective beaks 23 and 24.

The beak 23 serves as an abutment arranged to tear against the outer endof the sheath 10, while the beak 24 is provided with the prong or fingerproviding a claw 26 extended slightly toward the abutment beak 23, toform a hook which serves to engage .the shoulder 16, to effect theforward adjustment of the arch-bar when said handles ,21 and 22arcsqueezed together to eiiect'the relative approach" of said beaks.

As shown in F igsi- 3 and 6, the beak23 has its free end bifurcated toform the slot 29'which serves as a guide for the arch-bar 1. as shown inFig. 2, and said beak 23 also has the transversely disposed slotextended across the inner face of the beak 23 and adjoining but notcrossing the slot 29, being so relatively associated that the bottom orfloors of said slots 29 and 80 form ron 26, and the arc-khan 1 may bethus adjusted until said shoulder 16 registers with the slot 13,'as'shown incFig. 1 at the right hand side of the dental arch, and-in" F ig,It will be obvious that when the implement is'engaged with the sheath,as shown in Fig-2, and the prongs 23' and 24- are caused to approach,the arch-bar l will be guided longitudinally through the slot 29 whilethe tang 1 5 is so guided by the groove 30, as to be deflected laterallyand thereby curled over, as shown, to form'a retaining lock arranged tomaintain said arch bar in the; position to which it is thus adjusted;

Our invention is advantageous in that the means of adjustment of thearch ba'r l,

with respect toitsan'choris not carried on the" device which remainswithin the mouth of the patient, and therefore saidarch-bar is notreadily tampered with, without the knowled'ge'ot the operator, theadjusting implement, which in eii'ect serves as a key, being retainedby' the" operator, may be' ins'erted in the mouth of the patient whendesired, andengaged'with' the partsto be ad justed, such adjustmentbeing effected by means actuated wholly exterior to themouth of thepatient. 7 r

We do no-tdesire-to limit our-invention to theprecise details ofc'onstruction'and arrangement asher'ein'setforth, asit is obvious thatvarious modifications'may be made therein without departing ,from'theessential features of our invention as defined in the appended claims.

Having thus described our invention, we claim:

1. implement of the class described, comprising opposed relativelymovable members respectively" having an abutment provided-with a guidearranged to direct an arch-bar providedwith a tang longitudinallytherethrough, and having means arranged to deflect saidtang-laterallyfrom said archbar, and pivotally connected means arrangedto effect the longitudinal movement of said arch-bar with respect'to"said guide;

2. An implement of the class described, comprising opposed relativelypivoted members respectively having an abutment provided with a guidearranged; to ldng'itudinally direct an arch-bar having-atang, and

.having' means arranged to relitively deflect I'n W ith esswhereofi wehave hereurlto set said tang laterally from said arch-bar, and;ourhands' the 18th day of February, A. D., w

an opposed projection movable about the 1925, a11dihel8th dayofFebruary, A. D., 10:,

pivoted axis With respect to said fabutm'ent 1925, respectively. andincluding a; prong and a pocket arranged to engage and progress saidarch-q Q EDWARD HiANGLE. bar with respect to said gmde. SPENCER R.ATKINSON.

